Deductions & credits

Omg 😮 unbelievable my 15 month old son live with me since he was born and  I let his father claim him last year and this year last year he gives me $2000 this year nothing not even a penny so unfair.. my boyfriend and I don't even live together my son lived with me I do everything.. only one thing his a wonderful father so what can I do now I don't want him to claim our son anymore 😢☹️